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CDP1855C Datasheet Preview

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

No Preview Available !

CMOS Peripherals - - - - - - - - - - - - - - - - - - - - - - - - - - -
CDP1855, CDP1855C
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TOP VIEW
92CS- 2996!5R2
TERMINAL ASSIGNMENT
8-Bit Programmable
Multiply/Divide Unit
Features:
• Cascadable up to 4 units for 32-bit by 32-bit multiply or64 -7- 32 bit divide
• 8-blt by 8-bit multiply or 16 -7- 18 bit divide in 5.6 jJs at 5 Vor 2.8 jJs at 10 V
• Direct interface to CDP1800 series microprocessors
• Easy interface to other 8-bit microprocessors
• Significantly increases throughput of microprocessor used for
arithmetic calculations
The RCA-CDP1855 and CDP1855C are CMOS 8-bit
multiply/divide units which can be used to greatly increase
the capabilities of 8-bit microprocessors. They perform
multiply and divide operations on unsigned, binary
operators. In general, microprocessors do not contain
multiple or divide instructions and even efficiently coded
multiply or divide subroutines require considerable memory
and execution time. These multiply/divide units directly
interface to the CDP1800 series microprocessors via the
N-lines and can easily be configured to fit in either the
memory or I/O space of other 8-bit microprocessors.
The multiple/divide unit is based on a method of multiplying
by add and shift right operations and dividing by subtract
and shift left operations. The device is structured to permit
cascading identical units to handle operands up to 32 bits.
The CDP1855 and CDP1855C are functionally identical.
They differ In that the CDP1855 has a recommended
operating voltage range of4 -10.5 volts, and the CDP1855C,
a recommended operating voltage range of 4 - 6.5 volts.
The CDP1855 and CDP1855C types are supplied in a 28-
lead hermetic dual-in-line ceramic package (D suffix) and
in a 28-lead dual-in-line plastic package (E suffix). The
CDP1855C is also available in chip form (H suffix).
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File Number 1053
404 ____________________________________________________________
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GE

CDP1855C Datasheet Preview

CDP1855C Datasheet

8-Bit Programmable Multiply/Divide Unit

No Preview Available !

- - - - - - - - - - - - - - - - - - - - - - - - - - CMOS Peripherals
CDP1855, CDP1855C
MAXIMUM RATINGS, Absolute-Maximum Values:
DC SUPPLY-VOLTAGE RANGE, (VDD)
(Voltage referenced to VSS Terminal)
CDPI855 ................................................................. " ..................................... -0.5 to +11 V
CDPI855C ....••..••....•..•.......•......•...•••.....••..•..••.•..••..••..•...••....•••....•••••••.•••••••.••••• -0.5 to +7 V
INPUT VOLTAGE RANGE, ALL INPUTS •...•..•••..•••...•••.•.•.•••.•.....••...••...•••.•..•....•••••.....•••• -0.5 to VDD +0.5 V
DC INPUT CURRENT, ANY ONE INPUT ..•••.••••..••..•.••..•...••....•...••...•....•••••. '" .•.•••••.•••••••••••••••••• ±10 mA
POWER DISSIPATION PER PACKAGE (PD):
For TA = -40 to +60·C (PACKAGE TYPE E) .............................................................................. 500 mW
ForTA = +60 to +85·C (PACKAGE TYPE E) ••....••..•••...•..••.••••..•..•....••..•.•••••• Derate Lineary at 12 mW/·C to 200 mW
For TA = -55 to 100· C (PACKAGE TYPE D) .............................................................................. 500 mW
For TA = +100 to +125·C (PACKAGE TYPE D) ............................................. Derate Lineary at 12 mwrc to 200 mW
DEVICE DISSIPATION PER OUTPUT TRANSISTOR
For TA = FULL PACKAGE-TEMPERATURE RANGE (All Package Types) .................................................. 100 mW
OPERATING-TEMPERATURE RANGE (TA):
PACKAGE TYPE D ......•........•..••.•••...•••..•..••....••.•..••.....•.....••..•....•..•••...•..•.•••...••••.. -55 to +125·C
PACKAGE TYPE E ......•.......••..•......•.••..••..•.....••••.•••.••.••..•••.......•..••••...........•....••••.••-40 to +85·C
STORAGE TEMPERATURE RANGE (Tstg) .......................................................................... -85 to +150·C
LEAD TEMPERATURE (DURING SOLDERING):
At distance 1116 ± 1/32 inch (1.59 ± 0.79 mm) from case for 10 s max...................................................... +265·C
STATIC ELECTRICAL CHARACTERISTICS at TA = -40 to +85°C, VDD ± 10%, Except aa noted
CONDITIONS
CHARACTERISTIC
Vo VIN VDD
Quiescent Device
Current
(V) (V) (V)
- 0,5 5
100 -
0, 10 10
Output Low Drive
0.4 0,5
5
(Sink) Current
1m 0.5 0, 10 10
Output High Drive
4.6 0,5
5
(Source) Current
Output Voltage
IOH 9.5 0,10 10
- 0,5 5
Low-Level
Output Voltage
High Level
Input Low
Voltage
Input High
Voltage
Input Leakage
Current
Vall
VOH±
-
-
-
0.5,4.5
VIL 0.5,9.5
0.5,4.5
VIH 0.5,9.5
-
liN -
0, 10
0,5
0, 10
-
-
-
-
0,5
0, 10
10
5
10
5
10
5
10
5
10
3-State Output Leakage
0,5 0,5
5
Current
lOUT 0, 10 0, 10 10
Operating Current
1001# -
U,lI
0, 10
l)
10
Input Capacitance
CIN
Output Capacitance
COUT
LIMITS
CDP1855
CDP1855C
Min. Typ.- Max. Min. Typ.- Max.
- 0.D1 50
0.02 200
- -1 200 - -
1.6 3.2
-
1.6 3.2
-
-2.6 5.2 - - -
' -1.15 -2.3
- -1.15 1-2.3
-
-2.6 -5.2
-
-
-
-
0 0.1
0 0.1
- -0 0.1 - -
-4.9 5
4.9 5
-9.9 10 - - -
- - 1.5 -
1.5
- - 3-- -
3.5 -
- -3.5
-
7- --- -
±1 ±1
- - -±1 - -
±1 ±1
- - -±10 - -
- - - -"1.1I
6 12
1.0
5 7.5
5 7.5
10 15
lU III
UNITS
pA
mA
V
pA
mA
pF
lEI
-Typical values are for TA = 25° C and nominal VDD.
#Operating current is measured at 3.2 MHz with open outputs.
:j:IOL =IOH =lpA.
_________________________________________________________________ 405


Part Number CDP1855C
Description 8-Bit Programmable Multiply/Divide Unit
Maker GE
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CDP1855C Datasheet PDF






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